iOS 控制器自定义动画跳转方法(模态跳转)

2020-07-26 02:32:44

字体：大中小

来源：转载

供稿：网友

参考资料：

Apple 开发文档 Customizing the Transition Animations

WWDC 2013 Custom Transitions Using View Controllers

图例：

跳转的动画有很多，全部可以自定义

创建自定义跳转必须遵循的三个步骤:

1、创建一个类,并实现了 UIViewControllerAnimatedTransitioning 协议

2、创建一个类作为 UIViewControllerTransitioningDelegate 过渡代理

3、在模态跳转前修改控制器的 transitioningDelegate 代理为自定义的代理（步骤2的代理类）

核心代码示例

一、创建一个类，并实现了 UIViewControllerAnimatedTransitioning 协议

这个协议主要控制控制器视图的显示的，通过 transitionContext 可以获取到每个视图和控制器，并进行动画的设置

class AnimatedTransitioning: NSObject { var isPresenting: Bool = false}extension AnimatedTransitioning: UIViewControllerAnimatedTransitioning { func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval { return 0.5 } func animateTransition(using transitionContext: UIViewControllerContextTransitioning) { let fromView = transitionContext.view(forKey: .from)! let toView = transitionContext.view(forKey: .to)! let containerView = transitionContext.containerView if isPresenting {  toView.transform = CGAffineTransform(scaleX: 0, y: 0)  containerView.addSubview(toView) } else {  containerView.insertSubview(toView, belowSubview: fromView) } UIView.animate(withDuration: 0.5, animations: {  if self.isPresenting {  toView.transform = CGAffineTransform.identity  } else {  fromView.transform = CGAffineTransform(scaleX: 0.001, y: 0.001)  } }) { (finished) in  transitionContext.completeTransition(finished) } }}

二、创建一个类作为 UIViewControllerTransitioningDelegate 过渡代理

这里设置 presented 和 dismissed 时各自的动画转换类，可以设置为不同的类

class CustomTransitioningDelegate: NSObject, UIViewControllerTransitioningDelegate { func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? { let at = AnimatedTransitioning() at.isPresenting = true return at } func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? { let at = AnimatedTransitioning() at.isPresenting = false return at }}

三、在模态跳转前修改控制器的 transitioningDelegate 代理为自定义的代理

注意：代理不能为局部变量

class ViewController: UIViewController { // 必须保存为实例变量 var ctDelegate = CustomTransitioningDelegate() override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { let vc = TempViewController() vc.transitioningDelegate = ctDelegate self.present(vc, animated: true, completion: nil) }}

以上这篇iOS 控制器自定义动画跳转方法(模态跳转)就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持武林网。

上一篇：iOS Swift控制器转场动画示例代码

下一篇：基于IOS端微信分享失效的踩坑及解决方法